Determining volatile matter in combustible material



Jan. 7, 1930. Gfx-L HALvoRsoN 1,743,035

` DETERMINING VOLATILE MAVTTER IN COMBUSTIBLE MATERIAL Filed Jan. l5,1926 Patented Jan. 7, 1930 UNITED STATES PATENT OFFICE GAYLORD H.I-IALVORSON, OF DULUTI-I, MINNESOTA DETERMINING VOLATILE MATTER INCOMBUSTIBLE MATERIAL Application filed January 15, 1926. "Serial No.81,368.

This invention relates to a new and imdrawing a preferred form ofapparatus for proved method for determining the volatile carrying out myimproved method. matter in fuel, or other material. In the drawing,

Tests of this character are in general use Figure 1 is a perspectiveView showing the 5 for a number of purposes and particularly in Cruciblecasing and L connection with determining the volatile con- Figure 2 is avertical section through the tent of fuels such as coal. Here thevolatile Crucible and Casing. content is an indication of a quality ofthe The cruciblecasing comprises the body 11 coal and of its suitabilityfor various fuel and Cover 12 preferably formed of magnepurposes. It ishighly important that tests site, although it may be formed of other re-60 such as these be so standardized as to enraCllOry material capable 0fStanding high able different chemists in different laboratctemperatures.As shown in Figure 2, the ries to arrive at the same result in the testsCover l2 iS provided With a Circular flange of similar samples, y V13which surrounds a 'circular flange 14 on the 15 A method now in generaluse consists in body member in order to insure a complete 65 placing' aone gram sample in a platinum enclosure of the Crucible 15.V ThisCrucible Crucible of 15 cubic centimeters capacity and l5 may be formedof platinum, or any suitin placing the crucible in the from 0f a ablematerial. The bottom 16 of the casing furnace registering 500 degreescentigrade body 11 1S preferably thinner than the side until the flamesubsides and then placing it Walls and top of the casing and the casing30 in the interior of a muffle where the tempera- 1S Sdppoltod by logs17 So that tllo loottom l5 ture is 950 degrees centigrade for threeminout of Contact Wltll tho Support upoll Wllloll utes, after which itis cooled and weighed, the tho odsmg ToStS- Y loss in weightrepresenting volatile matter. In the use 0f my device, according to myIn carrying out the above method a variation method, the Sample of tllomaterial to loo `7 5 of one-half inch in the location of the crutostodl5 pldood lll tlleofuolble and the Crucible during the preliminaryignition may ollolo PlaCeCl 1n the CaSing- The Casing concause avariation in the volatile content detalmrlg the Crucible iS then placeddirectly termination 0f as much as 'Z5/100 0f 1% in t-lie muftle, whichpreferably is atatemper-- precautions may be able to Obtain uniforml'leSll'ie Casing ll'lSlllalleS the, CIllCllOle SO results, it is verydiiicult for dierent laboratho Sdmple ls not lofttod too l'dpldly- Thotories to so manipulate the method that the foto of hodtmg Wlll loo umlolm at all tlmeS C0341 will not be ignited more rapidly in one andresults secured by dierent laboratories 35 @ase than in the @than usingthis apparatus will be truly comparable. 85

It is an object of the present invention to I have Shown one preferredform of 8Jppt provide a new and improved method for mtu? for Carrymg outmy mprOYe method the determination of the volatile matter in but lt 1S.to loe/.understood that t'hls 1S Capable fuel or other material,whereby the determi- 0i modlcatlondand. I contemplate Such nation may becarried out by diiferent persons C @tiges and m0 l Canons as come W-lthmthe "'90 with the assurance of securing uniform re- Splnctldcope of thefappended Clalms sults 1. That ste in the method of determininor It 1 5 afurther ololecJ0 to Provlde a method volatile contdiit of material whichincludet of thls olldl'dotol" ddttptod to be .Ca-flod. out placing areceptacle having a sample of this 95 by the use of simple apparatusWltll ldpldlty material in a closed vessel and placing said andefhciency.' vessel in a furnace uniformly to heat said Other and furtherobjects will appear as sample, the description proceeds. 2. That step inthe method of determining Si) I have illustrated in the accompanyingvolatile content of material which includes 30 Vhilev the same chemistusing reasonable atllro of 950 dogmes ooltlglodo- Tho mag- `80 Y placinga platinum receptacle having a sample of thismaterial in a closedrefractory vessel and subjecting said vessel to heat in an ovenuniformly to heat Said sample.

e 3. That improvement in methods of determining the volatile content ofcombustible material which consists in weighin .a sample ofthe material,placing the weig ed sam ple ina container, enclosing the container in aninsulating casing, applying toA theY casing heat of a predeterminedtemperature' in order to heat the sample,- removing the sample from thecasing and the container, and finally Weighing the removed sampleto'compare its Weight before and after being submitted to the heattreatment.- f f y 4. That improvement in methods VVof de termining thevolatile content of combustible material which consists in, Weighing asample of the material, placing theweig-hed' sample in agfcntainerenclosed in an insulatingV l casing, applying to the casting'hea't of apre- 0f. Jannarg 1926.

y G man' H. HALvoRsoN.

